1967 Cadillac Calais on 2040-cars

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What will the next Presidential limo look like?

With recent news that the Secret Service has begun soliciting proposals for a new armored limousine, we've been wondering what the next presidential limo might look like. The current machine, nicknamed "The Beast", has a design based on a car that's no longer sold: the Cadillac DTS. If General Motors gets the job again, which wouldn't be a surprise considering the government still owns a chunk of the company, the next limo's shape would likely resemble the new XTS (below, left). But Cadillac hasn't always been the go-to car company for presidential whips.
Lincoln has actually provided far more presidential limousines throughout history than Cadillac. In fact, the first car modified for Commander-in-Chief-carrying duty was a 1939 Lincoln K-Series called "Sunshine Special" used by Franklin D. Roosevelt, and the last Lincoln used by a president was a 1989 Town Car ordered for George H.W. Bush. If President Obama wanted a Lincoln today, it would likely be an amalgam of the MKS sedan and MKT crossover, as illustrated above.
And what about Chrysler? The only record we could find of a President favoring the Pentastar is Nixon, who reportedly ordered two limos from the company during his administration in the '70s, and then another one, known today as the "K-Car limo," in the '80s after he left office. Obama, however, has a personal - if modest - connection to Chryslers, having owned a 300 himself before he took office. A 300-based Beast (above, right) would certainly earn the U.S. some style points.

GM patent reveals new two-stage turbocharger

Modern turbochargers may be some of the best ever made, but performance is something that engineers are always trying to improve. According to GM Inside News, General Motors (GM) is hoping to alleviate some of the negative aspects of a two-stage turbocharger setup with a newly-patented design. The patent, that was filed on May 19, 2016, reveals a clever bypass system that allows the engine, a four-cylinder unit, to optimize both the low-pressure and high-pressure inlets for its respective functions. According to the filing, a conventional two-stage turbocharger setup is engineered to allow both turbines to operate simultaneously at low and mid engine speeds. At high engine speeds, only the low-pressure turbine works. The setup can't isolate either the low or high pressure side, which can impair low-end performance. GM's new two-stage turbocharger setup looks to eliminate this by linking the high-pressure turbo to the exhaust manifold through the high-pressure inlet duct. The low-pressure turbo is attached to the high-pressure turbo by a low-pressure inlet duct, which is linked to a connecting channel. A single actuator that is housed in the exhaust manifold creates a bypass that can opens the high-pressure inlet or close the connecting channel. Depending on what the engine load and speed is, the ECU guides the actuator—a single rotating spindle with discs corresponding to flanges on the high and low pressure sides—to isolate one of the two turbos. Isolating the turbos allow the respective inlets to be engineered for the best possible fluid dynamic performance. The setup should increase performance and decrease lag. There's no word on what car this setup will make an appearance on, but it will most likely be used in premium vehicles before trickling down to the rest of GM's vehicles. Related Video: News Source: GM Inside News, AutoGuide via GM Authority Cadillac Chevrolet GM Technology Sedan turbo patent engine turbocharging

2013 Cadillac ATS 3.6 AWD

All-Wheel, All Right
There is no escaping the luxury all-wheel drive empire Audi has built for itself over the past 15 years. While nearly every high-end marque has at least one offering with power at all four corners, the hardware can't help but play second fiddle to Ingolstadt's Quattro kingdom. Leather-lined all-wheel drive is simply Audi the way minimum wage is an English degree. But General Motors seems hell-bent on raiding as many established fiefdoms as possible with the 2013 Cadillac ATS. Engineers and designers made no secret of the fact that the baby Cadillac was penned specifically to take on the BMW 3 Series, but Audi should be no less concerned about the newest luxury prince from Detroit.
GM has been stuffing all-wheel drive systems under their vehicles for years, but the effort hasn't come without nasty side effects. Unfortunate understeer, extra ride height, smallish wheels and porky curb weight meant opting for all-wheel drive was like signing your driving pleasure's death warrant. Would you like polished brass or brushed nickel hardware for your right foot's coffin, sir?